log: Fix comment for LOGC_BOOT

This comment is in the wrong format, so reports an error with
'make htmldocs'. Fix it.

Fixes: b73d61a5565 ("x86: zimage: Add a little more logging")
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/include/log.h b/include/log.h
index 29f18a8..e53afa4 100644
--- a/include/log.h
+++ b/include/log.h
@@ -96,8 +96,8 @@
 	LOGC_DEVRES,
 	/** @LOGC_ACPI: Advanced Configuration and Power Interface (ACPI) */
 	LOGC_ACPI,
-	LOGC_BOOT,	/* Related to boot process / boot image processing */
-
+	/** @LOGC_BOOT: Related to boot process / boot image processing */
+	LOGC_BOOT,
 	/** @LOGC_COUNT: Number of log categories */
 	LOGC_COUNT,
 	/** @LOGC_END: Sentinel value for lists of log categories */